Abdullah bin Umar reported,

"I divorced my wife while she was menstruating."Umar then went to the Prophet ﷺ and mentioned this to him, and he said, "Let him take her back. Then when she becomes pure, if he wishes, let him divorce her."I said to Ibn Umar, "Is that divorce counted?"He replied, "What would prevent it from being counted? Yes. Tell me, what if he was incapable and acted foolishly?"

Ahmad 5504

Sahih

حدثنا محمد بن جعفر حدثنا شعبة عن قتادة سمعت يونس بن جبير سمعت

ابن عمر يقول

طلقت امرأتي وهي حائض قال فأتى عمر النبي ﷺ فذكر ذلك له فقال ليراجعها فإذا طهرت فإن شاء فليطلقها قال فقلت لابن عمر أفتحتسب بها قال ما يمنعه نعم أرأيت إن عجز واستحمق

أحمد 5504صحيح
Contents
Reference
Commentary
Ayat
Collection
Musnad Ahmad
Book
Abdullah bin Umar
Numbering
Darussalam 5504
Ahmad 5504